Flagger training and certification requirements
From Nevada Department of Transportation (NDOT) Standard Specifications for Road and Bridge Construction:
“Flaggers shall have completed an approved instructional course in flagger procedures. Prospective flaggers shall possess a valid flagger card attesting that they have satisfactorily completed said instructional course conducted by the Department or some other course approved by the Department.”
See the website below for a list of Flagger Training / Certification Course Providers.